Beef Wellington is a steak dish of English origin, made out of fillet steak coated with pâté and duxelles, wrapped in puff pastry, then baked. Some recipes include wrapping the coated meat in a crêpe or parma ham to retain the moisture and prevent it from making the pastry soggy.
A whole tenderloin may be wrapped and baked, and then sliced for serving, or the tenderloin may be sliced into individual portions prior to wrapping and baking.